you stopped doing repetitive scans? >> we dropped the total number by about 20%. it would have been measured in the tens of millions of dollars. and it's not just ct scans. it's other imaging exams. >> reporter: and here's another way intermountain saves money, and i'll tell you it's so much cuter than an mri. here at this hospital, 2 out of every 10 babies are born via see sai caesarean, however the national average is 3 out of every 10 babies are born out of c-section. you might think one extra baby by c-section, what the difference? well, a c-section costs about $2,000 more than a vaginal birth, if you do the math, if every hospital in the country had statistics like this hospital, the nation would save about $1 billion. so, by instituting all of these changes to get rid of waste, how much money are you saving? >> we estimate we're saving at a minimum of $150 million per year. >> reporter: that's a lot of